After ultrasonic testing, the zirconium rod is not allowed to have air bubbles, holes, inclusions, segregation and other defects. In addition, many countries are also in accordance with the method of ASTMG2-74, taking out two samples from each 500kg lot number to carry out the corrosion test. Before the experiment, the sample needs to be pickled, in order to go out 0.025mm thick surface layer, and then carefully clean the acid fluid of the surface. In the autoclave, the maximum weight of samples are not more than 22mg/dm2.


Cutting the zirconium rod into a fixed size (this is the preparation stage of the production process) to get 150 to 200mm long solid round bar. During this process, it is necessary to pay attention to the possibility of fire in the metal fragments. In cutting, we often use emulsion and lubrication, so first, we need to carefully clean them, then the recycled metal debris can be used as the furnace charge in smelting.